yeah I had a post up here earlier about my gun chopping like every shot..And it was due to the piston in the electronic frame being to long it was files down and had no problems. But now its chopping again, first it was shooting at 580 psi I believe and 285 fps and it fired fine for a week chopped again like every shot then I tuned it down to 50o psi and 192fps and it fired fine then it chopped again and that was to the reg I think being filthy inside I cleaned and it still chopping but not as much the ref jumps like 500 to 520psi

Now I imstill using CO2 would be a good Idea to get a nitro on it before I ship back into kingman and see if works better?